Ingress Prevention for Keyboards

1. A keyboard assembly, comprising: a base; a key cap; a movement mechanism having a first portion coupled to the base and a second portion coupled with the key cap, the movement mechanism facilitating movement of the key cap relative to the base; and a guard structure configured to deform in response to movement of the key cap, the guard structure having a portion positioned between the key cap and the movement mechanism, the portion of the guard structure being in direct contact with a portion of the movement mechanism, the guard structure extending beyond a perimeter of the key cap, the guard structure having an aperture through which a portion of the keycap extends to couple the keycap to the second portion of the movement mechanism.

2. The keyboard assembly of claim 1 , wherein the base defines a cavity and the guard structure funnels the contaminants into the cavity.

3. The keyboard assembly of claim 1 , wherein the guard structure surrounds the key cap.

4. The keyboard assembly of claim 1 , wherein the movement mechanism includes a butterfly mechanism.

5. The keyboard assembly of claim 1 , wherein the guard structure does not contact the base when the key cap is in a depressed position.

6. A keyboard, comprising: a base; a web that defines a set of apertures; a butterfly mechanism coupled with the base; a key of a set of keys coupled to the butterfly mechanism and positioned within a respective aperture of the set of apertures; and a gasket comprising: a raised portion positioned between a key cap of the key and the butterfly mechanism, the raised portion being in direct contact with a portion of the butterfly mechanism, a gasket aperture being formed in the raised portion, wherein a portion of the key cap extends through the gasket aperture; and an unraised portion fixed between the web and the base.

7. The keyboard of claim 6 , wherein the gasket comprises a layer of fabric and a layer of silicone.

8. The keyboard of claim 6 , wherein the gasket comprises a membrane.

9. The keyboard of claim 6 , wherein the gasket resists depression of the key.

10. The keyboard of claim 6 , wherein the unraised portion includes: a first region fixed between the web and the base that is coupled to the web and the base; and a second region fixed between the web and the base that is uncoupled from the web and the base.

11. A key, comprising: a base; a key cap; a movement mechanism having a first portion coupled with the base and a second portion coupled with the key cap, the movement mechanism facilitating movement of the key cap relative to the base; a guard structure configured to deform in response to movement of the key cap, the guard structure having a portion positioned between the key cap and the movement mechanism, the portion of the guard structure being in direct contact with a portion of the movement mechanism and defining an aperture, wherein a portion of the key cap extends through the aperture to couple the key cap to the second portion of the movement mechanism.

12. The key of claim 11 , wherein the guard structure includes a raised portion and an unraised portion, and wherein the aperture is formed in the raised portion.

13. The key of claim 11 , wherein the guard structure forms a perimeter around the key cap.

14. The key of claim 11 , wherein the guard structure is coupled to the movement mechanism.

15. The key of claim 11 , wherein the guard structure is coupled to the key cap.

16. The key of claim 11 , wherein the guard structure includes a sloped surface that slopes from an edge of the key cap toward the base.

17. The key of claim 11 , wherein another portion of the guard structure is positioned between a web structure and the base.

18. The key of claim 11 , wherein the guard structure includes an end that is unconnected to another structure.